= D =
dumb terminal n.
A terminal that is one step above a
glass tty, having a minimally addressable cursor but no
on-screen editing or other features normally supported by a
smart terminal. Once upon a time, when glass ttys were common
and addressable cursors were something special, what is now called
a dumb terminal could pass for a smart terminal.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.